Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/id3.rb,
lib/invert_hash.rb

Overview

overwrite Hash.invert method

Direct Known Subclasses

ID3::GenericTag, ID3::RestrictedOrderedHash

Instance Method Summary collapse

Instance Method Details

#inverse ⇒ Object 



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# File 'lib/invert_hash.rb', line 71

def inverse
  i = Hash.new
  self.each_pair{ |k,v|
      if (v.class == Array)
          v.each{ |x|
            if i.has_key?(x)
               i[x] = [k,i[x]].flatten
            else
               i[x] = k
            end
          }
      else
		if i.has_key?(v)
 i[v] = [k,i[v]].flatten
		else
 i[v] = k
		end
      end
  }
  return i
end

#invert ⇒ Object 



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# File 'lib/id3.rb', line 95

def invert
   self.inverse
end

#old_invert ⇒ Object 



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# File 'lib/id3.rb', line 93

alias old_invert invert